Fastener



F. s. CARR.

Patented Oct. 31, 1922.

Patented wet.

stares career o FEED S. CARE, OF NEWTON, MASSACHUSETTS, ASSIGNOE TO CARR FASTENER COIMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MAINE.

FASTENER.

Application filedIVIarch 8,

To a]! who/It it may concern:

Be it known that I, Fnnn S. CARR, a citi- 'ten of the United States, and a resident of Newton. in the county of Middlesex and Commonwealth of Massachusetts, have invented an improvement in Fasteners, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the draw ings representing like parts.

This invention pertains to improvements in separable fasteners and more particu larly, though not exclusively, to separable fasteners of a type in which the socket is adapted to be sewn to a carrying fabric. It is among the objects of the invention to provide a superior separable fastener which may be cheaply manufactured.

Referring to the drawings and to the preferred form of my invention selected for illustrative purposes 2- Figure 1 is a front elevation of two pieces of fabric held together by a separable fastener;

Fig. 2 is Fig. 1;

Fig. 3 is ferred form a section on the line 2-2 of a front elevation of the preof socket;

Fig. is a front elevation of the pre ferred form of stud; and

Fig. 5 illustrates a modification of the socket which may be used where great holdin; power is desired when the fastener is to be subjected to great lateral strain.

Referring to the drawings and to the preferred form of my invention selected for illustrative purposes, I have shown a stud which may be of the usual construction including a head 6, neck portion 7 and base 8 secured to the stud-carrying fabric 9 by sewing or in any other suitable way. Cooperating with the before-described stud, T have illustrated a socket which preferably, as lllHStTflt-fifll, includes but two parts, a. spring if) and a spring-supporting ring 11. The s iring it) may be of the type illustrated in my co-peiuling application Serial No. -i5 ,7-i7. filed March 8, 1.921, preferably being stamped from sheet metal to provide a stud-receiving aperture 12, and stitchingreceiving apertures 13, and slotted at one side from the stud-receiving aperture to its periphery in any suitable way as by the straight slit or slot i l. This slit or slot 1 need not be straight, but may be of any de 1921. Serial No. 450,749.

sired form, such for instance as that shown in my (to-pending application Serial No. 450,746, filed March 8, 1921. Slits are pref erably provided between the stitch-receiving apertures 13 and the stud-receiving aperture 12, to increase the resilience of the spring. The ring 11 is an abbreviated form of socket casing overlying the opposite sides of the spring 10, and having its rim 20 of such diameter that its interior peripheral face will permit limited expansion only of the spring 10. Thus, if under lateral strain there is a tendency for the spring 10 to become expanded to such an extent as would, without support, result in breakage or setting of the spring, the portions 21 and 22 of the spring will bear against the interior wall of the ring which will provide the necessary and desired support to prevent injury to the spring. The preferred form of spring illustrated has but three stitch-receiving apertures and these, while they may be equidistant from the aXis of the stud-receiving aperture 12, are preferably not equi-distant from each other, as by being symmetrically disposed about the axis of said stud-receiving aperture. They are preferably disposed in such a way as to leave relatively free one side of the socket, this preferably being the side adjacent the line of strain and the one normally adjacent the edge 30 of the socketcarrying fabric. The rim or casing is prefcrably of such width'on both sides that no individual stitch-receiving apertures therein are necessary. This precludes the necessity for registering the socket relative to the easing and considerably simplifies the opera tion of automatic manufacture and assembly of the fastener. It is recommended that anyone attaching the socket to the fabric do so in such a way that the slot 14 is in the line of strain, and if the socket is positioned in .this way the three stitch-receiving apertures are of necessity, as indicated in Fig. 3, located in the correct. position relative to the line of strain. It is immaterial how the casing is positioned so long as the spring is correctly positioned.

In Fig. 5 of the drawings, I have illustrated a construction in which a notch or narrowed portion 50 is provided communieating with the stud-receiving aperture and into which the neck of the stud may fall when strain is exerted in the desired direction. This effectively locks the fastener against separation arising from the resolution of. forces under lateral strain bet-Ween stud and socket. The socket is preferably as illustrated, similar on both :t'aces so that it is immaterial which face is toward the socket-carrying fabric.

lVhile I have shown and described a preferred form of one embodiment of my invention, it will be understood that changes involving oinissioin substitution, alteration and reversal of parts, and even changes in the mode of operation may be made Without departing from the scope of my invention, which is best defined in the following claims.

Claims:

1. A socket for separable fasteners con1- prising a spring split at one side to its periphery having stitclrreceiving apertures therein and a ring-like casing "surrounding said spring and having flanges overlying both faces of said spring, the stitchreceiving apertures in said spring exposed on both faces of said socket and said casing limiting expansion of said spring.

2. A socket for separable fasteners comprising in. combination, a flat sheet metal spring having a stud-receiving aperture therein and slitted to its periphery for resiliency, said sheet metal spring having stitch-receiving apertures therethrough, and

a ring-like casing presenting two relatively narrow flanges peripherally overlying the marginal portions of said spring while leaving said stitch-receiving apertures exposed, said casing limiting expansion of said spring. i

3. A socket for separable fasteners coinprising in coi'nbination, a spring having a stud-receiving aperture therethrough and split from said aperture to its periphery and a ring-like casing surrrnjniding said spring and overlying marginally both faces of said spring, and stitch-receiving apertures in said spring lying opposite the central aperture in said ring-like casing, said casing limiting expansion of said spring.

4;. A. socket for separable fasteners coniprising, in combination, a spring having a stud-receiving aperture therethrough and open at one side from said aperture to its periphery and a ring-like casing surrounding said spring and overlying marginally 'both faces of said spring, and stitch-receiv ing apertures in said spring lying opposite the central aperture in said ring-like casing,

said casing limiting expansion of said spring.

In testimony whereof, I have signed my name to this specification.

FRED s. CARR. 

